We (me and my boyfriend) stayed in Kusuma's place for 5 nights. The place was very nice, just as in the pictures, very clean and cosy. There was even a washing machine in the balcony, which was useful.
It is located in a new condominium with a swimming pool and a small gym, as it was not busy we had the pool for ourselves. The location is perfect as it is close both to BTS Asok and MRT Sukhumvit (about 7-9 mins walk). There is also a big shopping mall by the BTS station: Terminal 21 (shops, restaurants, food court, etc.). There are also smaller restaurants and shops closer around.
The check-in and check-out was easy and Kusuma was nice and flexible with timings. For check-in, as we were delayed she left the key for us with the management (the room behind reception). On our way out, we gave the key to Kusuma who met us at the building.
We would love to stay at Kusuma's again next time we are in Bangkok.
Ka Kusuma :)